<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>07_绝对定位</title>
    <style>
        .fu{
            background-color: yellow;
            position: relative;
        }
        .fu>div {
            width: 100px;
            height: 100px;
        }
        .z1{background-color: #f00;}
        .z2{
            background-color: #0f0;
            position: absolute;
            right: 0;
            top: 0;
        }
        .z3{background-color: #00f;}

    </style>
</head>
<body>
<div class="fu">
    <div class="z1"></div>
    <div class="z2"></div>
    <div class="z3"></div>
</div>
</body>
</html>